IEC 265 |
| Ikko Ihara1, Eriko Shimada2, Kiyoshi Kanamura3, and Tsuneo Watanabe1. (1) Department of Electrical Engineering, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachiouji, 192-0397, Japan, (2) Department of Applied Chemistry, Kanagawa Institute of Technology, 1030 Shimoogino, Atsugi, 2430292, Japan, (3) Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachiouji, 1920397, Japan |
| Landfill leachate usually contains a high concentration of organics and nitrogen. The present work is to investigate the treatability of landfill leachate by the system of iron electrocoagulation, high gradient magnetic separation and electrochemical oxidation. In the first iron electrocoagulation with landfill leachate, phosphorus was changed to iron phosphate, and also the iron was converted to trivalent iron hydroxide, where the iron hydroxide adsorbed organic compounds from landfill leachate. Suspended solids, including trivalent iron hydroxide and iron phosphate were removed by high gradient magnetic separation using a superconducting magnet. The removal rate of total phosphorous (T-P) was approximately 90% at the flow rate of 100 L/h. After magnetic separation, residuals such as nitrogen compounds and chemical oxygen demands (COD) were destroyed by electrochemical oxidation using Ti/PbO2 anode. The application of the electrochemical oxidation was effective technique in removal rates of over 90% for both COD and NH4-N. |
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Magnetic-Field-Enhanced Separation and Related Processes (sponsored by Separation Science & Technology Subdivision)
1:30 PM-4:50 PM, Thursday, March 27, 2003 Convention Center -- Room 393, Oral
Division of Industrial and Engineering Chemistry |